Description
The MC-45V8AB641 is a 8,388,608 words by 64 bits VirtualChannel synchronous dynamic RAM module on which 4 pieces of 128M VirtualChannel SDRAM : µPD45125161 are assembled.
This module provides high density and large quantities of memory in a small space without utilizing the surface mounting technology on the printed circuit board.
Decoupling capacitors are mounted on power supply line for noise reduction.

Features
• 8,388,608 words by 64 bits organization
• Clock frequency and access time from CLK
• Fully Standard Synchronous Dynamic RAM, with all signals referenced to a positive clock edge
• Dual internal banks controlled by BA0 (Bank Select)
• Programmable wrap sequence (sequential / interleave)
• Programmable burst length (1, 2, 4, 8 and 16)
• Read latency (2)
• Prefetch read latency (4)
• Auto precharge and without auto precharge
• Auto refresh and self refresh
• Single 3.3 V ± 0.3 V power supply
• Interface: LVTTL
• Refresh cycle: 4K cycles/64 ms
• 168-pin dual in-line memory module (Pin pitch = 1.27 mm)
• Unbuffered type
• Serial PD